Bobbin-winder for motor-driven sewing-machines



a. H. RIDDELL BOBBIN WINDER F OR MOTOR DRIVEN SEWING MACHINES.

APPLICATION FIILED SEFT- 26 19I9- Patented Aug- 31, 1920.

- GEORGE E. nIDnELn'oF BUFFALO, NEW YORK, assxenoa'ro mnesm'sawma;

- MACHINE 00., Inc, or BUFFALO, NEW ong, A conronarroiv on NEW YORK,

'BOBBLN-WI DER FOR MOTOR-DRIVEN SEWING-MACHINES.

To all whom z'tmay concern: I I

Be it known that I, GEORGE I-I.' RIDDELL, a citizen of the United States, residing at Buffalo, county of Erie, State of New York, have invented a certain new and useful Improvementin Bobbin- Winders for Motor- Driven Sewing-Machine's, and declare ith'e' following to be a full, clear, and exact description of the same, su ch as will enable others skilled inthe art to which it pertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

. Sewing machines are now 7 generally equipped with devices" on which bobbins may conveniently be Wound, the winding be ing automatically stopped whenever a bobbin has been filled to a predetermined point. These winding devices are provided with wheels or pulleys adapted to be driven frictionally either through contact with one of the usual or a supplementary, wheel on the sewing machine or by contactwvith the driving belt. In the ordinary foot-power sewing machine, the forward run of the belt is approximately vertical; the inclination of the belt beingchanged somewhat where motor is placed, underneath the table of -the machine. However, when the motor is placed behind the sewing machine head, as is the general'practicein so-called portable'sewing machine heads, thatpart of the belt passing downi from the front side of the driven pulley onthe'head no I longer extends in the vertical direction but is inclined sharply toward the rear; the re: sult being that the ordinary belt-driven bobbin winder attachment cannot be employed.

The object of the present invention is to produce a simple and novel bobbin-winding device which will permit av bobbin, arranged in the usual way on the front side of the sewingmachine, to be conveniently driven from thebelt driven by a motor lying behind the head.

The various features of novelty whereby my invention is characterized will here-I inafter be pointed out with particularity" in the claims; but, for a full understanding of my invention and of its object and advantages, reference may be had ;to the following detailed description taken. in con- Specification of rates meta Patented Aug. 31, 1920. Application filed September 26, 1919. "seria -N 326,619. I

nection with the accompanying drawing,

wherein:

I Figure l .isanend view of a sewingma- I chine head mounted on a portable base and- I having thereon a bobbin winder arranged Fig. 2 is aside view, on a larger scale,

Referring to the drawing, 1 representsfa I sewing machine head having a driven .pul I ley, 2. In rear of the head and mounted on the-same base, 3, as that on which the head s mounted, is an adjustable motor, 4.

A belt, 5, passes around a driving wheel orfpulley, 6, on. the motorand around the driven wheel 2 of the sewing machine; The motor is mounted in such a'manner that it ,tends constantly toswing oriotherwise move in a direction to tighten the belt, thus atall- 1 times maintaining thebelt under tension- This may conveniently be accomplished by pivotallysupporting the motor so as to permit 1t to swing about an axis or shaft-7,

parallel with the axes of thewheels 2 and 4 1a suitable spring, 8, beingprovided for?" the purpose of constantly exerting a force on the motor tending to sw'ing tlie pulley 6 rearwardly and; away from the driven 'p'ulley of the machine. 7 i 7 bracket, 9,attached 'to astationary part of The bobbin-winding device-comprises af the sewing machine head by means of a screw, 10, 'or in any, suitable way; the bracket carrying at its front end a complete winding device of any usualor suitable construction.

arm, l1,'piv0tal ly connected at its lower V In the arrangement shown, the windmg device consists of an.

rying at its upper end a horizontalrotary I bobbin-receiving shaft or s'pindle,'12, to

one end of which is secured-the winder,

pulley, 13. A spring,14,1tehds constantly to swing the upper end of the arm toward the operator. A catch, 15, is adapted to engage with a shoulder, 16, on the swinging.

arm to lock the latter in'aworking position; the catch being provided with a finger, 17,

which extends upwardly past the shaft or spindle, 12, in position to be engaged by ;the thread in a bobbin wound upon the V spindle and to cause the catch to be tripped ment therewith in the usual way when the parts occupy their winding positions as when a suflicient amount of thread has been wound. i v l On the bracket behind the swinging arm and in the same plane as the winder pulley is an idler pulley, 18, so positioned that when the front run of the driving belt is passed underneath the idler pulley, that part of the belt lying between the idler'pulley and the driven wheel or pulley 2 of the sewing machine, indicated at 19, occupies the proper position to permit the 'winder' pulley to be brought into driving engageillustrated in the drawing; 7

It will therefore be seen that I am enabled to employ a bobbin winder located in the place where bobbin winders are usually placed and adapted to stop winding when the bobbin is full, and at the same time permit it to be driven from a belt leading to a motor lying behind a sewing machine ehead.

During the time when no winding is to be done the belt may be slipped off the idler pulley an'd be permitted to run directly bewith particularity only a single preferred form of my invention, 1 do notdesire to'be limited to the exact structural details thus cation. I

illustrated and described; but intend to cover all forms, and arrangements which taken up and again automatically procome within the terms employed in the defi- 'nitions of my invention constituting the appended claims.

I claim: 4 a

l. The combination-with. a sewing machine head, of a 'motor arranged behind the head, adriving belt between the motor and the head, a bobbin winder arranged at the front of the head and having a winder pulley, and aguide associated with said bobbin winner and en aging with said belt to defiect the latter into engagement with said vinder pulley when the latter is in its winding position. e V p 2. The combination with asewing machine having a driven pulley, of a 'motor provided with a driving pulley, a belt passing over said'pulleys, a bobbin winder having a winder pulley lying remote from the lower run" of the belt when the latter eX- tends in a straight line between the driving and drivenpull'eys, and an idler pulley associated with said bobbin winder and 'defleeting said run of the belt to bring a part thereof into operative relation to said wwinder pulley. I a

8. The combination with a sewing ma-' chine having a -drivenpulley, of a motor v lower run of the belt when the latter eX-' tends in a strai ht line between thedrivin l ing said run of the belt to bring a part thereof into operative relation to said winder pulley, and means for movablyrsup- I portingsaid motor so asto permitit automatically to 'adjustlitself to take up the'slack ,and driven pulleys, an idler pulley asso- 'ciated with said bobbin winder'and de'fiectin .the'belt when the latter is unshipped from the idlerpulleyj J'In testimony whereof, signthis'specifi- GEORGE H. rennan; 

